[ 22.958336] audit: type=1800 audit(1539400099.914:21): pid=5129 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 22.985476] audit: type=1800 audit(1539400099.914:22): pid=5129 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 24.091811] sshd (5193) used greatest stack depth: 15496 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.22' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 577.672410] sched: DL replenish lagged too much [ 577.672494] hrtimer: interrupt took 417330 ns [ 682.852163] rcu: INFO: rcu_sched detected stalls on CPUs/tasks: [ 682.858364] rcu: (detected by 0, t=10520 jiffies, g=-1179, q=0) [ 682.864526] rcu: All QSes seen, last rcu_sched kthread activity 10521 (4295005425-4294994904), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 682.877053] swapper/0 R running task 21816 0 0 0x80000000 [ 682.884329] Call Trace: [ 682.886908] [ 682.889132] sched_show_task.cold.83+0x2b6/0x30a [ 682.893888] ? can_nice.part.74+0x20/0x20 [ 682.898044] ? vprintk_default+0x28/0x30 [ 682.902098] ? vprintk_func+0x85/0x181 [ 682.905984] ? vprintk_func+0x85/0x181 [ 682.909860] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 682.914619] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 682.919389] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 682.924926] print_other_cpu_stall.cold.79+0xa83/0xba5 [ 682.930190] ? find_next_and_bit+0x183/0x1e0 [ 682.934729] ? print_cpu_stall+0x1c0/0x1c0 [ 682.938964] ? print_usage_bug+0xc0/0xc0 [ 682.943194] ? __lock_acquire+0x7ec/0x4ec0 [ 682.947418] ? graph_lock+0x170/0x170 [ 682.951202] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 682.956756] ? check_preemption_disabled+0x48/0x200 [ 682.961771] ? check_preemption_disabled+0x48/0x200 [ 682.966867] ? rcu_test_sync_prims+0x30/0x30 [ 682.971402] ? rcu_lockdep_current_cpu_online+0x1f0/0x2d0 [ 682.977076] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 682.982343] ? rcu_pm_notify+0xc0/0xc0 [ 682.986280] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 682.991816] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 682.997508] ? check_preemption_disabled+0x48/0x200 [ 683.002512] rcu_check_callbacks+0xafc/0x1990 [ 683.006996] ? rcu_cpu_stall_reset+0x220/0x220 [ 683.011590] ? mark_held_locks+0x130/0x130 [ 683.015812] ? __lock_acquire+0x7ec/0x4ec0 [ 683.020073] ? graph_lock+0x100/0x170 [ 683.023883] ? print_usage_bug+0xc0/0xc0 [ 683.027936] ? task_prio+0x50/0x50 [ 683.031466] ? find_next_and_bit+0x183/0x1e0 [ 683.035871] ? load_balance+0x66c/0x3430 [ 683.039952] ? graph_lock+0x170/0x170 [ 683.043751] ? check_preemption_disabled+0x48/0x200 [ 683.048773] ? check_preemption_disabled+0x48/0x200 [ 683.053933] ? trace_hardirqs_off+0xb8/0x310 [ 683.058331] ? rcu_pm_notify+0xc0/0xc0 [ 683.062223] ? trace_hardirqs_on+0x310/0x310 [ 683.066620] ? check_preemption_disabled+0x48/0x200 [ 683.071643] ? raise_softirq+0x199/0x420 [ 683.075704] ? raise_softirq_irqoff+0x2e0/0x2e0 [ 683.080508] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 683.086068] ? check_preemption_disabled+0x48/0x200 [ 683.091084] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 683.096615] ? hrtimer_run_queues+0x9a/0x400 [ 683.101021] ? run_local_timers+0x19b/0x230 [ 683.105340] ? timer_clear_idle+0x90/0x90 [ 683.109487] ? irqtime_account_process_tick.isra.6+0x3a5/0x490 [ 683.115604] ? account_process_tick+0x282/0x350 [ 683.120269] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 683.125796] update_process_times+0x2d/0x70 [ 683.130107] tick_sched_handle+0x9f/0x180 [ 683.134244] tick_sched_timer+0x45/0x130 [ 683.138478] __hrtimer_run_queues+0x41c/0x10d0 [ 683.143058] ? tick_sched_do_timer+0x1a0/0x1a0 [ 683.147789] ? hrtimer_start_range_ns+0xe00/0xe00 [ 683.152705] ? pvclock_read_flags+0x160/0x160 [ 683.157203] ? trace_hardirqs_on+0x310/0x310 [ 683.161608] ? kvm_clock_read+0x18/0x30 [ 683.165578] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 683.170589] ? ktime_get_update_offsets_now+0x3b6/0x550 [ 683.175967] ? do_timer+0x50/0x50 [ 683.179426] ? trace_hardirqs_on+0x310/0x310 [ 683.183885] ? do_raw_spin_lock+0xc1/0x200 [ 683.188122] hrtimer_interrupt+0x313/0x780 [ 683.192404] smp_apic_timer_interrupt+0x1a1/0x760 [ 683.197231] ? smp_call_function_single_interrupt+0x650/0x650 [ 683.203103] ? interrupt_entry+0xb5/0xf0 [ 683.207174] ? trace_hardirqs_off_caller+0xbb/0x310 [ 683.212190] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 683.217034] ? trace_hardirqs_on_caller+0x310/0x310 [ 683.222369] ? graph_lock+0x170/0x170 [ 683.226182] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 683.231112] apic_timer_interrupt+0xf/0x20 [ 683.235457] RIP: 0010:__do_softirq+0x2c3/0xad8 [ 683.240029] Code: c7 c0 98 f2 31 89 48 c1 e8 03 42 80 3c 30 00 0f 85 17 07 00 00 48 83 3d e2 ef 51 01 00 0f 84 6e 06 00 00 fb 66 0f 1f 44 00 00 <48> c7 85 68 fe ff ff 00 91 20 89 b8 ff ff ff ff 0f bc 85 74 fe ff [ 683.258933] RSP: 0018:ffff8801dae07ae8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 683.266647] RAX: 1ffffffff1263e53 RBX: ffffffff89276e40 RCX: 0000000000000000 [ 683.273902] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff892776bc [ 683.281158] RBP: ffff8801dae07cc8 R08: ffffffff89276e40 R09: 0000000000000000 [ 683.288412] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1003b5c0fa1 [ 683.295682] R13: ffffffff89276e40 R14: dffffc0000000000 R15: 0000000000000000 [ 683.303094] ? apic_timer_interrupt+0xa/0x20 [ 683.307503] ? __do_softirq+0x298/0xad8 [ 683.311531] ? __irqentry_text_end+0x1f9618/0x1f9618 [ 683.316660] ? pvclock_read_flags+0x160/0x160 [ 683.321145] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 683.326675] ? check_preemption_disabled+0x48/0x200 [ 683.331702] ? kvm_clock_read+0x18/0x30 [ 683.335674] ? kvm_sched_clock_read+0x9/0x20 [ 683.340229] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 683.345826] ? check_preemption_disabled+0x48/0x200 [ 683.350872] irq_exit+0x17f/0x1c0 [ 683.354319] scheduler_ipi+0x55a/0xad0 [ 683.358206] ? migration_cpu_stop+0x6a0/0x6a0 [ 683.362696] ? kasan_check_write+0x14/0x20 [ 683.366926] ? rcu_dynticks_eqs_enter+0x4c/0x70 [ 683.371589] ? rcu_nmi_exit+0x1f8/0x280 [ 683.375559] ? rcu_idle_enter+0x4b0/0x4b0 [ 683.379811] ? kvm_clock_read+0x18/0x30 [ 683.383789] ? kvm_sched_clock_read+0x9/0x20 [ 683.388201] ? sched_clock+0x31/0x40 [ 683.391913] ? sched_clock_cpu+0x1b/0x1b0 [ 683.396052] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 683.401755] ? check_preemption_disabled+0x48/0x200 [ 683.406762] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 683.412290] ? check_preemption_disabled+0x48/0x200 [ 683.417313] smp_reschedule_interrupt+0x109/0x650 [ 683.422144] ? smp_thermal_interrupt+0x850/0x850 [ 683.426896] ? interrupt_entry+0xb5/0xf0 [ 683.430950] ? trace_hardirqs_off_caller+0xbb/0x310 [ 683.435946] ? trace_hardirqs_off_caller+0xbb/0x310 [ 683.440959] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 683.445856] ? trace_hardirqs_on_caller+0x310/0x310 [ 683.450869] ? trace_hardirqs_on_caller+0x310/0x310 [ 683.455896] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 683.461453] ? check_preemption_disabled+0x48/0x200 [ 683.466468] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 683.471308] reschedule_interrupt+0xf/0x20 [ 683.475526] [ 683.477753] RIP: 0010:native_safe_halt+0x6/0x10 [ 683.482412] Code: e9 2c ff ff ff 48 89 c7 48 89 45 d8 e8 e3 e0 11 fa 48 8b 45 d8 e9 ca fe ff ff 48 89 df e8 d2 e0 11 fa eb 82 55 48 89 e5 fb f4 <5d> c3 0f 1f 84 00 00 00 00 00 55 48 89 e5 f4 5d c3 90 90 90 90 90 [ 683.501306] RSP: 0018:ffffffff89207bb8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff02 [ 683.509005] RAX: dffffc0000000000 RBX: 1ffffffff1240f7b RCX: 0000000000000000 [ 683.516359] RDX: 1ffffffff1263e54 RSI: 0000000000000001 RDI: ffffffff8931f2a0 [ 683.523618] RBP: ffffffff89207bb8 R08: ffffffff89276e40 R09: 0000000000000000 [ 683.530869] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff89207c78 [ 683.538120] R13: ffffffff89f3be20 R14: 0000000000000000 R15: 0000000000000000 [ 683.545394] default_idle+0xbf/0x490 [ 683.549215] ? rcu_dynticks_eqs_enter+0x4c/0x70 [ 683.553865] ? __sched_text_end+0x1/0x1 [ 683.557833] ? rcu_idle_enter+0x329/0x4b0 [ 683.562112] ? rcu_eqs_special_set+0x1b0/0x1b0 [ 683.566675] ? tsc_verify_tsc_adjust+0x137/0x460 [ 683.571416] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 683.576912] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 683.582449] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 683.587991] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 683.593537] arch_cpu_idle+0x10/0x20 [ 683.597253] default_idle_call+0x6d/0x90 [ 683.601304] do_idle+0x3db/0x5b0 [ 683.604662] ? arch_cpu_idle_exit+0x70/0x70 [ 683.608976] ? check_preemption_disabled+0x48/0x200 [ 683.613980] ? __schedule+0x1ed0/0x1ed0 [ 683.618018] cpu_startup_entry+0x10c/0x120 [ 683.622243] ? cpu_in_idle+0x20/0x20 [ 683.626020] rest_init+0xe2/0xe5 [ 683.629386] start_kernel+0x8f4/0x92f [ 683.633179] ? mem_encrypt_init+0xb/0xb [ 683.637162] ? early_idt_handler_common+0x3b/0x60 [ 683.642002] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 683.647529] ? x86_family+0x3e/0x50 [ 683.651158] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 683.656691] x86_64_start_reservations+0x29/0x2b [ 683.661449] x86_64_start_kernel+0x76/0x79 [ 683.665698] secondary_startup_64+0xa4/0xb0 [ 683.670033] rcu: rcu_sched kthread starved for 10601 jiffies! g-1179 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 683.680329] rcu: RCU grace-period kthread stack dump: [ 683.685514] rcu_sched R running task 25144 11 2 0x80000000 [ 683.692707] Call Trace: [ 683.695283] __schedule+0x86c/0x1ed0 [ 683.699090] ? __sched_text_start+0x8/0x8 [ 683.703247] ? __mod_timer+0x6f6/0x1870 [ 683.707209] ? add_timer_on+0x9f0/0x9f0 [ 683.711183] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 683.716282] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 683.721373] ? lockdep_hardirqs_on+0x421/0x5c0 [ 683.725944] ? trace_hardirqs_on+0xbd/0x310 [ 683.730254] ? kasan_check_read+0x11/0x20 [ 683.734394] ? prepare_to_swait_event+0x25a/0x800 [ 683.739514] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 683.744958] schedule+0xfe/0x460 [ 683.748332] ? __schedule+0x1ed0/0x1ed0 [ 683.752296] ? prepare_to_swait_event+0x25a/0x800 [ 683.757327] ? __init_swait_queue_head+0x150/0x150 [ 683.762267] ? __lockdep_init_map+0x105/0x590 [ 683.766756] ? lockdep_init_map+0x9/0x10 [ 683.771011] schedule_timeout+0x140/0x260 [ 683.775158] ? usleep_range+0x1a0/0x1a0 [ 683.779126] ? __next_timer_interrupt+0x1a0/0x1a0 [ 683.783966] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 683.789496] rcu_gp_kthread+0x9d9/0x2310 [ 683.793734] ? rcu_gp_init+0x1830/0x1830 [ 683.797782] ? update_curr+0x344/0xbe0 [ 683.801652] ? print_usage_bug+0xc0/0xc0 [ 683.805695] ? __account_cfs_rq_runtime+0x790/0x790 [ 683.810693] ? graph_lock+0x170/0x170 [ 683.814477] ? graph_lock+0x170/0x170 [ 683.818397] ? __lock_acquire+0x7ec/0x4ec0 [ 683.822628] ? __lock_is_held+0xb5/0x140 [ 683.826768] ? update_curr+0x344/0xbe0 [ 683.830672] ? rcu_pm_notify+0xc0/0xc0 [ 683.834544] ? __account_cfs_rq_runtime+0x790/0x790 [ 683.839654] ? mark_held_locks+0x130/0x130 [ 683.843881] ? rcu_read_lock_sched_held+0x108/0x120 [ 683.848895] ? rcu_note_context_switch+0x14b6/0x26b0 [ 683.853991] ? set_next_entity+0x2f0/0xaf0 [ 683.858212] ? rcu_read_lock_sched_held+0x108/0x120 [ 683.863222] ? pick_next_entity+0x197/0x390 [ 683.867535] ? match_held_lock+0x291/0x8d0 [ 683.871765] ? graph_lock+0x170/0x170 [ 683.875555] ? run_rebalance_domains+0x500/0x500 [ 683.880322] ? partition_sched_domains+0x60/0x5f9 [ 683.885152] ? __lock_acquire+0x7ec/0x4ec0 [ 683.889377] ? mark_held_locks+0x130/0x130 [ 683.893598] ? __schedule+0x150b/0x1ed0 [ 683.897567] ? _raw_spin_unlock_irq+0x27/0x80 [ 683.902190] ? _raw_spin_unlock_irq+0x27/0x80 [ 683.906713] ? lockdep_hardirqs_on+0x421/0x5c0 [ 683.911392] ? trace_hardirqs_on+0xbd/0x310 [ 683.915724] ? kasan_check_read+0x11/0x20 [ 683.919862] ? __schedule+0x150b/0x1ed0 [ 683.923821] ? lock_repin_lock+0x430/0x430 [ 683.928044] ? _raw_spin_unlock_irq+0x60/0x80 [ 683.932527] ? __schedule+0x150b/0x1ed0 [ 683.936486] ? __switch_to_asm+0x40/0x70 [ 683.940530] ? __switch_to_asm+0x40/0x70 [ 683.944585] ? graph_lock+0x170/0x170 [ 683.948373] ? __sched_text_start+0x8/0x8 [ 683.952515] ? find_held_lock+0x36/0x1c0 [ 683.956578] ? __kthread_parkme+0xce/0x1a0 [ 683.960798] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 683.965898] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 683.970990] ? lockdep_hardirqs_on+0x421/0x5c0 [ 683.975702] ? trace_hardirqs_on+0xbd/0x310 [ 683.980032] ? kasan_check_read+0x11/0x20 [ 683.984444] ? __kthread_parkme+0xce/0x1a0 [ 683.988737] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 683.994531] ? kasan_check_write+0x14/0x20 [ 683.998898] ? do_raw_spin_lock+0xc1/0x200 [ 684.003139] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 684.008224] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 684.013758] ? __kthread_parkme+0xfb/0x1a0 [ 684.017995] kthread+0x35a/0x420 [ 684.021447] ? rcu_gp_init+0x1830/0x1830 [ 684.025492] ? kthread_bind+0x40/0x40 [ 684.029472] ret_from_fork+0x3a/0x50